JP6808862B1 - Electric assisted bicycle that can run on self-charge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrically assisted bicycle capable of traveling while self-charging, having no limitation on a maximum mileage, and having emergency power output of 5V and 12V. SOLUTION: An assist control means for transmitting the rotational force of a crank shaft to an alternator to generate electricity, storing the DC output power in a secondary battery and at the same time supplying the DC output power to a hub motor for front wheels, and collating the output of a torque sensor with the traveling speed. Adjust the hub motor output at and drive assisted. When starting with the start push button switch, by pressing and holding the switch, the hub motor rotates for several seconds with the power of the secondary battery to start, and after that, the driver pedals and runs while self-charging. The secondary battery is charged by the alternator during driving, and is charged by the regenerative power from the hub motor during coasting. The secondary battery has 5V and 12V emergency power output, and it is also possible to boost the voltage with a commercially available 12V / 100V inverter and connect small household appliances. [Selection diagram] Fig. 1

Description

Technical fields related to electrically power assisted bicycles

This application is described in "Japanese Patent Application No. 2019-186511 Self-Charging Electric Bicycle (Patent Approval on February 18, 2nd year of Reiwa)" shown in "Patent Document 1" in which the applicant is the patentee. It is the one with two improvements and necessary corrections.

(Improvement 1) By adding a chain that transmits the rotational force of the crankshaft to the rear wheel sprocket, it is possible to run on its own even if something goes wrong with the hub motor, secondary battery, alternator, or all of them. To do so.
(Improvement 2) In preparation for a power outage such as a natural disaster, a 5V power supply that can be connected to a smartphone or tablet terminal and a commercially available 12V / 100V inverter boosts the voltage so that home appliances such as personal computers and small TVs can be connected. Add 12V power output.

Japanese Patent Application No. 2019-186511 Electric bicycle that can run on its own charge

Not applicable

It can be started and started with the start push button switch, it can run while self-charging, there is no limit on the maximum mileage, it can run on public roads without a license, and it has 5V and 12V emergency power output. Electric assisted bicycle.

The rotation of the crankshaft is transmitted to the alternator to generate electricity, and the DC output power is stored in the secondary battery, and the assist amount is adjusted by comparing the output of the torque sensor that detects the difference between pedal pedal force and running resistance with the running speed. It is supplied to the hub motor of the front wheels via the assist control means to run. When starting with the start push button switch, by pressing and holding the switch, the hub motor rotates for several seconds with the power of the secondary battery and starts, and after that, the driver pedals and self-charges while assisting. ..

The secondary battery is charged by the alternator during assisted driving and by the regenerative power from the hub motor during coasting driving. If there is a concern about a voltage drop due to frequent start / stop in a short time or leaving for a long time, the vehicle can be stopped, the stand can be set up, and the pedal can be pedaled for self-charging. At this time, the rear wheels act as flywheels. If it takes time to fully charge, it is possible to remove the secondary battery and charge it indoors with a dedicated charger.

As for the output power of the secondary battery, stabilized 5V output and 12V output are installed in the battery case with the USB socket and cigarette lighter socket as output terminals, respectively, and the battery case can be opened in the event of a power failure due to a disaster or the like. The 5V output is boosted via a smartphone, tablet terminal, etc., and the 12V output is boosted via a commercially available 12V / 100V inverter, and home appliances such as personal computers and small TVs can be connected. When the secondary battery voltage drops to near the lower limit set value, a warning sound and a warning light prompt the battery to charge.

The following effects can be expected from the electrically power assisted bicycle of the present invention.
(1) While the mileage of a general electrically power assisted bicycle is 50 to 100 km, the mileage of the electrically power assisted bicycle of the present invention is not limited because it travels while self-charging.
(2) Power can be started by the start push button switch without pedaling, which is suitable for housewives and elderly people with weak leg strength.
(3) If there is a concern that the voltage of the secondary battery will drop, the alternator can be self-charged by stopping, standing the stand and pedaling.
(4) It serves as an emergency power source in the event of a power outage such as in the event of a disaster.

Basic configuration Power generation mechanism and start pushbutton switch Electrical system basic configuration Ratio of leg force and assist force ・ Crankshaft rotation speed and running speed Emergency power supply and application to road bikes

The general specifications of an ordinary bicycle, also called a city cycle, are tire diameter = 0.66m and gear ratio between chain wheel and rear wheel sprocket gear = 2.285, so crankshaft rotation required to run at 10km / h The number is 10x1000 / 0.66x3.14x2.285x60 = 35 rpm. Based on this result, the basic configuration of the present invention is an electrically assisted bicycle in which the crankshaft rotation speed reaches 10 km / h at 35 rpm and the bicycle can run while self-charging.

FIG. 1 shows the basic configuration of the present invention. Reference numeral 101 denotes a self-excited alternator, in which the rotational force of the crankshaft 103 is transmitted through the gearbox 102 to generate electricity. In order to reduce the load on the secondary battery 104, the secondary battery 104 is not used as the exciting power source for the rotor, but the load is lightened by self-exciting with a DC generator with a built-in alternator and controlling the magnetic force. Normal charging is performed by outputting the corresponding voltage and supplying an appropriate charging current to the secondary battery 104.

In order to reduce the excessive current consumption of the hub motor 127 at the time of starting (starting) as much as possible and reduce the load on the secondary battery 104, the hub motor 127 uses a gear reduction type hub motor having a built-in reduction gear.

Reference numeral 104 denotes a secondary battery such as a lithium ion battery, which is housed in the battery case 120 and locked by the battery case key 119. When it is necessary to charge from the outside, it can be removed from the battery case 120 and charged with a dedicated charger. In the battery case 120, a central control means 121 that collectively includes a start control means, an assist control means, a regenerative brake control means, a runaway start suppression means, and the like is housed. Furthermore, in preparation for a power outage due to a disaster, etc., there is a 5V power supply via the USB socket, and the 12V power supply via the cigarette lighter socket is boosted by a commercially available 12V / 100V inverter for personal computers and tablets. Home appliances such as small TVs can be connected.

The 116 is a power key switch, which can be changed according to the product specifications, from the three-stage basic type of "lock, running, and charging" to the four-stage type of "lock, normal, power, and charging." "Lock" is a state where the power is off, and if an optional lock device is added, the wheels will be locked at the same time as the power is turned off. "Running" is a three-stage basic driving mode, "Charging" is the position when the stand 124 is set up and the pedal 108 is paddled to charge, "Normal" is a four-stage standard driving mode, and "Power" is a strong acceleration. It is a sport mode. In the "running", "normal" and "power" modes, S1a (FIG. 3) and S1b are closed at the same time, and in the "charging" mode, only S1a is closed. Many models of general electrically power assisted bicycles are equipped with an eco mode in order to save the consumption of the secondary battery, but in the present invention, it is not necessary to run while self-charging.

Reference numeral 122 denotes a display unit formed by a liquid crystal panel or the like. When the power key switch 116 is turned on, the traveling speed, battery voltage, traveling mode, regenerative braking mode, charging status, etc. are collectively displayed.

Reference numeral 115 denotes a start push button switch, which is used when starting from a stopped state. It is effective only when the saddle switch S6 (FIG. 3) that the saddle pressure sensor 118 operates by detecting the pressure is ON and the front wheel drive wheel 110 is stationary, and the start switch S3 (press and hold for about 1 second) ( FIG. 3) is closed, the hub motor 127 is energized from the secondary battery 104 for several seconds, and the vehicle starts with the power of only the secondary battery 104. The reason for providing a long press time of about 1 second is to prevent sudden pop-out at the moment when the finger touches the switch. The long press time is not limited to 1 second, but 0.5 to 1.0 second is desirable.

When the vehicle starts with the start push button switch 115 and the front wheel drive wheel 110 rotates by 1/4 rotation (= 90 degrees) or more, the speed sensor 310 (FIG. 3) mounted on the rotation shaft of the hub motor 127 detects this. , The central control means 307 (FIG. 3) closes the start switch S4 (FIG. 3). At this point, since the driver has begun to row the pedal 108, the electric power from the alternator 101 and the secondary battery 104 is supplied to the hub motor 127, and the electric power and power generation are generated from the state where the vehicle is running only with the electric power of the secondary battery 104. Shift to assisted driving with aircraft support.

When the power key switch 116 is in the traveling position, the saddle switch S6 is ON, and the front wheel drive wheels 110 are stationary, the start is assumed when starting from the bicycle parking lot or waiting for a signal on a public road. The push button switch 115 is in the effective start standby state, but even if the foot placed on the pedal 108 moves carelessly in that state, the hub unless the speed sensor 310 detects 1/4 or more rotation of the front wheel drive wheel 110. The motor 127 does not start and does not make an unintended runaway start.

When both feet are stopped from the power-assisted running state by the hub motor 127 to the coasting running state, the torque sensor 303 (FIG. 3) detects this, and the regenerative brake control means 309 (FIG. 3) starts switch S4 (FIG. 3). 3) is opened, and the regenerative brake is activated at the same time as the regenerative power from the hub motor 127 is stored in the secondary battery 104. At this time, since the regenerative brake brakes the front wheel drive wheels 110, sudden braking may cause the front wheels to lock and cause a fall, and the regenerative brake control means 309 adjusts the resistance value of the regenerative brake adjustment resistance 314 (FIG. 3). Then, add a safe braking amount commensurate with the running speed. As an example, the amount of braking is reduced at a speed of 10 km / h or more, and braking close to full braking is applied at a speed of 10 km / h or less.

When riding an ordinary bicycle, the driver visually recognizes the decrease in speed and acceleration when approaching an uphill or downhill, and at the same time, feels from the increase or decrease in the load applied to the pedal and pedals strongly or stops the pedal. The speed is adjusted by an operation such as applying a brake, and the same operation is performed in the present invention. That is, the climbing resistance on the uphill increases the load of the pedal 108 and prompts the driver to recover the speed by increasing the pedaling force of the pedal 108. The torque sensor 303 detects this amount and the assist control means 308 (FIG. 3) is a hub motor. Increase the assist force of 127 within the legal limit.

For natural acceleration on a downhill slope, the pedal 108 is stopped and the rear wheel brake lever 113 is throttled to suppress the acceleration. In this state, the regenerative brake is operating moderately, so it is safer than a normal bicycle.

Reference numerals 111 and 112 are front wheel and rear wheel disc brakes, which are operated by the front wheel brake bar 114 and the rear wheel brake bar 113, respectively. The type of brake is not limited to the disc type, and any type may be used. The rear wheel brake lever 113 has a built-in sensor for stopping the power supply to the hub motor 127, and works in conjunction with the brake switch S5 (Fig. 3). During assist driving, the lever 113 is physically throttled by a certain amount. When the rear wheels are braked, the power supply to the hub motor 127 is stopped, and the lever 113 is returned, the power is turned on again. If the lever 113 is throttled during coasting, the brakes are efficiently braked by both the regenerative brake during operation and the physical brakes of the rear wheels, and if the lever 113 is returned, the braking is returned to the regenerative brake only. When stopping, the lever 113 is continuously throttled, and when the rotation speed of the front wheel drive wheels 110 becomes zero, the regenerative brake control means 309 releases the regenerative brake, and at the same time, the start switch S4 of the central control means 307 (FIG. 3) is released. Confirm that the state is, confirm that the hub motor 127 has stopped, and return to the start standby state.

The 118 is a pressure sensor built into the saddle 117, which detects a pressure of 10 kg or more to recognize whether or not the driver is on the saddle 117, and the saddle switch S6 is opened when the sensor does not detect the pressure. The hub motor 127 does not start. When the driver inadvertently touches the start push button switch 115 while the driver is getting off the saddle 117, or when the driver touches the saddle 108 with his or her foot, the driver may run away. Absent. The detected weight of the pressure sensor is not limited to 10 kg as long as it can correctly detect whether or not the driver is on the saddle 117.

Figure 2-1 shows the power generation mechanism. The rotational force of the crankshaft 203 is transmitted in only one forward direction by the one-way clutch 207. The chain wheel 206 transmits a rotational force to the rear wheel sprocket via the chain 210, and the generator gears A and 205 drive the alternator 208 via the generator gears B and 209 to generate electricity. Reference numeral 204 denotes a magnetostrictive torque sensor, which detects the difference between the pedaling force of the pedal 201 and the traveling resistance transmitted to the chain wheel 206 and sends it to the assist control means 308 to adjust the assist amount.

FIG. 2-2 is a detailed view of the start push button switch 115, showing the mounting direction when mounting near the right-hand drive grip. 221 is a protective wall to prevent erroneous operation, and the driver operates it with his / her thumb through the opening on the right side of the front view. Reference numeral 223 is a push-on type switch body, which is covered with waterproof rubber 222 assuming rainy weather. 224 is a switch base, 225 is a lashing belt for attaching to the handle, and 226 is an electric wire connected to the start control means.

This completes the description of each equipment and means, and then describes how to ride the electrically power assisted bicycle of the present invention. There are the following two types of starting methods.
1. 1. How to start with the start push button switch 115 2. How to start by pedaling the pedal 108 while the driver is on the saddle 117

1. 1. Starting method using the start push button switch 115 In order to prevent erroneous operation, the start push button switch 115 is surrounded by a protective wall 221 on the left half as shown in FIG. 2-2, and the switch body 223 is a rubber cover 222 for waterproof purposes. It is covered with. This switch is effective only when the saddle switch S6 (FIG. 3) is ON and the front wheel drive wheels 110 are stationary.

When the driver presses and holds this switch while the vehicle is on the saddle 117, the start switch S3 (Fig. 3) closes for a few seconds after about 1 second, the hub motor 127 starts, and the front wheel drive wheels 110 rotate. Within a few seconds, the driver pedals the pedal 108 to manually drive the rear wheels and drives the alternator 101 to start charging the secondary battery 104. When the front wheel drive wheel 110 rotates by 1/4 rotation (= 90 degrees) or more, the start switch S4 is closed, the power supply to the hub motor 127 is continued, and the vehicle starts running with the assist added.

According to the definition of "electrically assisted bicycle" in the Road Traffic Act, the ratio of pedaling force by human power to assist is stipulated as 1: 2 from the start to 10 km / h. The pedaling force in this region in the present invention should be equivalent to that of a general electrically power assisted bicycle, but the rotational force required to drive the alternator 101 is added as a new load, so this amount must be taken into consideration when assisting. It doesn't become. In the present invention, the assist control means 308 monitors the output of the torque sensor 303 while monitoring the traveling speed so that the pedaling force in this region is equivalent to that of a general electrically assisted bicycle, and based on the result, the hub with respect to the traveling speed. The assist amount of the motor 127 is adjusted so as to match the pedal depression force of a general electrically assisted bicycle.

Similarly, since the region from 10 km / h to 24 km / h is defined as a linear gradual decrease from 1: 2 to 0, the assist control means 308 also controls the assist amount in this section as well.

Assistance is not permitted for speeds above 24 km / h, but the present invention continues to require assist in order to match the pedal effort of a normal bicycle in this area. That is, the load of the alternator applied to the pedal 108 in this region is offset by the assist force of the hub motor 127 to match the pedal pedaling force of the ordinary bicycle.

According to the Road Traffic Law overseas, even Japanese-specification "fully electric bicycles" can often be driven on public roads without the need for a license, and an example of the upper limit of motor output and assist release speed is EU countries = 250W / Although it is specified as 25km, UK / Canada = 500W / 32Km, there seems to be no strict regulation on the amount of assist for the driving speed, and the algorithm of the driving mode can be simplified. In the case of production oriented toward overseas markets, specifications may be set according to the destination.

2. 2. Method of starting by pedaling This is a method of starting manually without depending on the start by the hub motor 127. The driver gets on the saddle 117, pedals 108, manually drives the rear wheels 106 to start, rotates the front wheel drive 110 by 90 degrees or more, causes the speed sensor 310 to detect this, and closes the start switch S4. The electric power from the secondary battery 104 and the alternator 101 is supplied to the hub motor 127, and the assist running is started.

This method is a starting method for the purpose of reducing the burden on the secondary battery 104, but for cases where a reliable start is required by simple operation such as waiting for a signal on a public road, or for housewives and elderly people with weak legs. The starting method by the start push button switch 115 of is desirable.

FIG. 4-1 shows the ratio of the leg force when the driver pedals and the assist force by the motor for each running speed. (X) is a restriction by the Ministry of Land, Infrastructure, Transport and Tourism, (Y) is a power mode of a general electrically power assisted bicycle, and there is a safety margin of about 10% with respect to the upper limit by law, and (Z) is a normal mode. This is an example.

In the electrically power assisted bicycle of the present invention, a load for driving the alternator is newly added to the pedal pedaling force. Therefore, in order to match the pedaling force of a general electrically power assisted bicycle, it is necessary to increase the assist amount to cancel the load for driving the alternator. The assist control means 308 monitors the output of the torque sensor 303 while monitoring the traveling speed, and adjusts the assist amount of the hub motor 127 based on the result to match the pedal depression force of a general electrically assisted bicycle. It is controlled like this.

The regulations of the Ministry of Land, Infrastructure, Transport and Tourism are intended for existing general electrically power assisted bicycles, and similar regulations are applied to electrically power assisted bicycles with an unprecedented structure such as the present invention equipped with a generator. Whether or not it must wait for the decision of the Land, Infrastructure, Transport and Tourism Law. Therefore, the above explanation is based on the assumption that the current legal provisions are applied as they are.

FIG. 4-2 shows the relationship between the crankshaft rotation speed and the traveling speed. The solid line is the normal running mode of the present invention, and the relationship between the crank shaft rotation speed and the running speed is the same as that of a normal bicycle, but the pedal depression force of the present invention in the B and C regions is assisted by the hub motor of a general electrically assisted bicycle. It is almost the same as the pedal effort.

Area A shows a state in which the start operation is performed by pressing the start push button switch 115, and in area B, the driver pedals 108 to manually drive the rear wheels 106 and the alternator 101 starts power generation to perform the secondary operation. It shows a state in which the battery 104 is charged, power is supplied to the hub motor 127, and the vehicle is accelerating in assisted driving. When the crankshaft rotation speed is 35 rpm, the speed reaches 10 km / h, and the assist amount is controlled by the assist control means 308 so as to correspond to the pedal effort of a general electrically assisted bicycle.

Region C also reaches 24 km / h at a crankshaft speed of 84 rpm under acceleration from 10 km / h to 24 km / h. The assist amount is controlled by the assist control means 308 so as to correspond to the pedal depression force of a general electrically assisted bicycle.

The region D of 24 km / h or more is an region where assist is not permitted, but in the present invention, in order to offset the load required to drive the alternator 101, the assist by the hub motor 127 is continued and the general electric assist bicycle is continuously assisted. It is controlled to correspond to the pedal effort of.

As shown by the broken line in FIG. 4-2, the assist is stopped for the purpose of suppressing further acceleration for safety at a speed of 30 km / h (= crankshaft rotation speed 105 rpm) or more. Therefore, the pedal pedaling force keeps the load required for driving the alternator 101 applied, which makes the driver feel a heavy pedal load and urges the driver to suppress further acceleration.

FIG. 3 shows the basic configuration of the electric system. Each control means that analyzes the signal from each detection means and performs predetermined control is integrated in the central control means 307 and comprehensively controlled.

S1 is a power key switch that opens and closes the main power supply. If you set this switch to the "running" position when you start driving, S1a and S1b will turn on, and the saddle sensor will turn on when the driver gets on the saddle 117. 313 detects it and the saddle switch S6 is turned on to enter the start standby state.

When the start push button switch S2 is pressed and held, the delay circuit 301 turns on the start switch S3 after about 1 second (0.5 to 1.0 seconds), and the hub motor M is powered by the power from the secondary battery 311. It is started and started, and the holding circuit 302 holds the state for several seconds. For a few seconds, the central control means 307, which detects that the front wheel drive wheel 110 has rotated 90 degrees or more by the speed sensor 310, closes the start switch S4, the driver starts pedaling 108, and the rear wheels are manually driven. It means the time required for the alternator 312 to start power generation. If the rotation of the front wheel drive wheels 110 is not detected within this period, it is determined that some trouble has occurred, and the holding circuit 302 is timed out while the S4 is left open, and an error message is displayed on the display unit. If this happens when starting at an intersection, the pedal 108 may be pedaled to drive on its own and move to a safe shoulder.

Immediately after starting with the start push button switch S2, the driver pedals the pedal 108 to manually drive the rear wheels 106 and rotate the alternator 312. The electric power from the alternator 312 and the electric power of the secondary battery 311 which has started charging drive the hub motor M through the start switch S4 closed by the central control means 307. The assist control means 308 monitors the output of the torque sensor 303 while monitoring the traveling speed to adjust the assist amount, and the assist traveling is started.

To lightly brake in the assisted running state, the lever of the manual brake 306 is lightly squeezed, and the rear wheel disc brake 112 physically brakes to reduce the speed. When further braking, the lever is squeezed deeply to strengthen the physical braking, and at the same time, the brake switch S5 is opened, the hub motor M idles, and the regenerative brake operates. When the braking is finished and the lever is returned, the brake switch S5 is closed and the hub motor M is powered again.

In the coasting state in which the crankshaft is stationary, the start switch S4 is opened, and the idling hub motor M functions as a generator to charge the secondary battery 311 and at the same time operates as a regenerative brake. Since the regenerative brake brakes the front wheel drive wheels 110, the regenerative brake control means 309 adjusts the regenerative brake adjustment resistance 314 to add a safe braking amount according to the traveling speed in order to prevent the vehicle from tipping over due to the front wheel lock. To further brake and stop from this state, the manual brake 306 is throttled to physically brake, and when the front wheel drive wheels 110 finally stop, the regenerative brake is released, S4 remains open, and the vehicle starts. Return to the standby state.

If there is a concern that the voltage of the secondary battery 311 will drop due to frequent start and stop, or if the secondary battery 311 is left unattended for a long period of time, the stand 124 is set up and the pedal 108 is pedaled to generate electricity. The secondary battery 311 can be charged. In this state, the rear wheel 106 acts as a flywheel to generate electricity smoothly. Upon charging, the power key switch 116 is switched to the "charging" position, and S1a = ON and S1b = OFF. The charging status can be monitored by the display unit 315.

FIG. 5-1 shows a block diagram of the emergency power supply. 501 is a secondary battery, 502 and 503 are constant voltage means for 12V and 5V, respectively, 504 and 505 are polyswitches for 12V and 5V (self-recovering overcurrent fuse), and 506 is a cigarette lighter socket for 12V output. , 507 is a USB socket for 5V output, and is mainly used as an emergency power source in the event of a disaster.

Commercially available car accessories can be connected to the 12V power supply via a cigarette lighter socket, and home appliances such as personal computers and small TVs can be connected by boosting with a 12V / 100V inverter. A smartphone, tablet terminal, or other general USB device can be connected to the 5V power supply.

The point to keep in mind when connecting these devices is that the rated power consumption of the device does not exceed the rated capacity of the emergency power supply, but in the unlikely event that the polyswitches 504 and 505 operate, the device and the second device Protect the next battery. The polyswitch cuts off the circuit current due to high resistance due to heat generated by overcurrent, and after a certain cooling time, the resistance value becomes close to zero ohm and self-recovers.

When the device is connected and used continuously for a long time, it is necessary to stand the stand, pedal the alternator to drive the alternator, and periodically charge the secondary battery 501. The voltage monitoring means 508 monitors the voltage of the secondary battery 501, and when it approaches the lower limit set voltage that needs to be charged, the warning sound of the alarm 510 and the blinking of the warning light 509 prompt the charging. If you pedal while charging, the rear wheels act as a flywheel to rotate the alternator smoothly.

FIG. 5-2 shows a road bike or a cross bike used for long-distance touring or mountain touring with the self-charging assist function and the emergency power supply function of the present invention added. It is effective as a charging means when the built-in batteries and spare batteries of mobile terminals and GPS terminals are used up in mountainous areas.

As described in detail in the above-mentioned "mode for carrying out the invention", it can be applied to the basic configuration of a single-seater shown in FIG. 1 and the road bike, cross bike and the like shown in FIG. 5-2.

Since the electrically power assisted bicycle of the present invention travels while self-charging, it is expected that the feature that the mileage is unlimited is to enhance the industrial applicability. If the requirements stipulated by the Road Traffic Act are met, it is considered to be approved as a classification similar to general electrically power assisted bicycles, and it will be possible to drive on public roads without the need for a license. Furthermore, in the event of a power outage such as a disaster, the 5V power supply and 12V power supply installed in the battery case can be used to connect home appliances such as smartphones, tablet terminals, personal computers and small TVs, and general electrically power assisted bicycles and full Since the product value is higher than that of electric bicycles, it can be expected to develop new markets.

Overseas road traffic law is looser than Japanese regulations, and in Japan it is often possible to drive on public roads without the need for a license even if the structure is specified for a fully electric bicycle. Therefore, the features of the present invention have been strengthened. , It is possible to contribute to the development of overseas markets by arranging products with specifications that meet the laws and regulations of each country.

There is a code explanation at the bottom of each drawing

Claims (3)

A torque sensor that detects the difference between the pedal pedal force that rotates the crank shaft and running resistance, a one-way clutch that transmits the rotation of the crank shaft only in the direction of travel, a chain that transmits that rotational force to the rear wheel sprocket, and the rotational force of the crank shaft. An alternator that receives and generates electricity, a secondary battery that stores DC power output from the alternator, a hub motor that drives the front wheels, a speed sensor that is installed on the rotating shaft to detect the number of revolutions, and a torque sensor output. Assist control means that adjusts the assist amount by collating with the speed sensor output, a start push button switch that is near the right or left hand handle grip and can be operated with the right or left finger, and this switch is 0.5 to 1 The start control means that the hub motor rotates and starts for a few seconds from the stopped state by pressing and holding for a second, the regenerative brake control means that controls the charging current by the regenerative power from the hub motor during coasting, and the inside of the saddle A saddle sensor that detects the load applied to the saddle, a saddle switch that opens and closes according to the detection result, a runaway start suppression means that prevents runaway start during bicycle parking operation based on that information, and a runaway start suppression means near the center of the handle A display means that displays the running speed, secondary battery voltage, running mode, regenerative braking mode, charging status, etc. all at once in a position that is easy for the driver to see, and a power key switch that opens and closes the entire electric circuit and switches the running mode. An electrically assisted bicycle characterized by being equipped. The assist control means can change the assist control pattern by changing its algorithm, can be selected and set in various ways such as a normal mode and a power mode, and is characterized in that the mode is switched by a power key switch. The electrically assisted bicycle according to claim 1. Applying the self-charging feature, the 5V power output is supplied from the USB socket and the 12V power output is supplied from the cigarette lighter socket, and it has a function as an emergency power supply used in the event of a power outage due to a disaster or the like. The electrically assisted bicycle according to claim 1.